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Renesas 74HC564P-E
- Part No.:
- 74HC564P-E
- Manufacturer:
- Renesas
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74HC564P-E.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
74HC564P-E from Renesas Electronics is an octal D-type flip-flop with inverting 3-state outputs, designed for data latching and bus isolation in digital logic systems. It operates across 2–6 V supply, features 13 ns typical clock-to-output delay (CL = 50 pF), supports –40°C to +85°C industrial temperature range, and uses positive-edge clock triggering. It is commonly deployed in microcontroller I/O expansion and address/data bus buffering.
For engineers reviewing the 74HC564P-E datasheet, 74HC564P-E pinout, 74HC564P-E application, or 74HC564P-E equivalent, key selection criteria include output inversion logic, 3-state enable timing (tZH/tZL ≤ 39 ns), fanout capability (15 LSTTL loads), and DIP-20 package compatibility with legacy through-hole PCB layouts.
Technical Context
The 74HC564P-E implements eight independent D-type flip-flops, each with complementary Q̅ outputs and a shared Output Control (OC) input that forces all outputs into high-impedance state when high. Its positive-edge-triggered storage elements meet setup (tsu ≥ 5 ns) and hold (th ≥ 5 ns) requirements across full VCC range.
Internal architecture includes Schmitt-trigger inputs for noise immunity, rail-to-rail CMOS output swing, and low quiescent current (ICC ≤ 4 µA at 25°C). The device complies with JEDEC standard 74HC logic family voltage thresholds and switching behavior under CL = 50 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC - High-speed CMOS compatible with TTL input levels and low power consumption |
| Supply Voltage | 2.0–6.0 V - Enables direct interface with 3.3 V and 5 V systems without level shifters |
| Propagation Delay | 13 ns typ (CL = 50 pF) - Supports reliable operation up to 28 MHz maximum clock frequency at 85°C |
| Output Type | Inverting 3-state - Provides active-low registered outputs with bus contention prevention via OC pin |
| Fanout | 15 LSTTL loads - Drives multiple downstream TTL inputs without external buffers |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded control and instrumentation applications |
| Quiescent Current | ≤ 4 µA at 25°C - Minimizes standby power in battery-backed or energy-sensitive designs |
Pinout & Package
Dual In-line Package (DIP-20), 20-pin through-hole, body size 24.5 × 6.3 mm, 2.54 mm pitch, JEDEC MS-001 compliant. Lead finish: Ni/Pd/Au plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OC) | Output Control | Active-high enable for 3-state outputs; overrides clock and data when high |
| 2–9 (1D–8D) | Data Inputs | Asynchronous parallel data inputs synchronized on rising clock edge |
| 10 (GND) | Ground | Reference return path for logic and supply currents |
| 11–18 (1Q̅–8Q̅) | Inverting Outputs | Registered, inverted, tri-stateable outputs - Q̅ reflects stored D value when OC = low |
| 19 (CK) | Clock Input | Positive-edge-triggered master clock for all eight flip-flops |
| 20 (VCC) | Supply Voltage | Primary power rail; must be decoupled locally to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Inverting registered outputs | Provides direct interface to active-low bus architectures (e.g., memory write strobes, chip selects) |
| 3-state output control | Enables time-multiplexed sharing of common data buses among multiple devices without external gating |
| Wide VCC range (2–6 V) | Supports mixed-voltage system integration and brown-out tolerant operation down to 2 V |
| Low input current (≤1 µA) | Reduces loading on upstream drivers and enables high-fanout tree topologies |
| High noise immunity | Input hysteresis ensures robust operation in electrically noisy industrial environments |
Applications
| Microcontroller I/O Expansion | Address Latching for Legacy Memory Interfaces |
|---|---|
Use Scenario: Expanding GPIO count of an 8-bit MCU by latching parallel port data to drive LEDs, relays, or sensors. IC Role / Device Role / Timing Role: Acts as an output latch: stores MCU parallel writes on CK edge and presents stable inverted outputs to peripherals. Use Value: Eliminates need for software bit-banging; provides glitch-free output transitions synchronized to system clock. | Use Scenario: Capturing 16-bit address bus signals during multiplexed AD bus cycles in 8080/8085-based systems. IC Role / Device Role / Timing Role: Functions as address latch: freezes upper/lower address byte on rising CLK edge before bus reuse. Use Value: Ensures valid static address during memory read/write windows; OC pin allows dynamic bus release. |
| Industrial Bus Isolation | Test Fixture Signal Conditioning |
Use Scenario: Isolating PLC I/O modules from shared backplane data lines to prevent signal contention. IC Role / Device Role / Timing Role: Serves as bidirectional bus buffer: OC controls directionality while Q̅ outputs drive isolated segments. Use Value: Prevents cross-talk between modules; inverting logic matches common open-collector driver conventions. | Use Scenario: Generating controlled, inverted stimulus patterns for IC functional testing on automated test equipment. IC Role / Device Role / Timing Role: Operates as pattern register: preloaded D inputs are clocked out as precise timing waveforms via Q̅ pins. Use Value: Delivers sub-15 ns edge accuracy and repeatable phase alignment across all eight channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC574N | Non-inverting outputs; identical pinout and timing specs except Q vs Q̅ polarity | Requires logic inversion in downstream circuitry if active-low signaling is required | Select when system design expects true (non-inverted) registered outputs |
| 74HCT564N | TTL-compatible input thresholds (VIH = 2.0 V min); same output inversion and 3-state behavior | Better interoperability with legacy 5 V TTL logic families without level translation | Select when interfacing directly with 74LS or other TTL-series devices |
Compared with 74HC564P-E, SN74HC574N eliminates output inversion but requires external inverters for active-low bus control, while 74HCT564N retains inversion and 3-state functionality but guarantees TTL-level input recognition-making it preferable in mixed-logic-voltage systems where input noise margins are critical.
Availability
74HC564P-E is available at Aetrix Electronics and suitable for industrial control panels, legacy system repairs, and educational electronics labs requiring stable component supply and long-term DIP-20 footprint compatibility.
Supply support for 74HC564P-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and logic devices for industrial, automotive, and infrastructure markets.
The 74HC564P-E belongs to Renesas' legacy HC logic portfolio, engineered for pin-compatible replacement of obsolete TTL latches in cost-sensitive, space-constrained industrial control and instrumentation applications.
FAQ
What is the function of the OC pin on the 74HC564P-E?
The OC (Output Control) pin on the 74HC564P-E is an active-high enable that places all eight Q̅ outputs into high-impedance state regardless of clock or data inputs. When OC = high, outputs float; when OC = low, outputs reflect the latched D-input values on the next positive clock edge. This enables bus sharing in multi-device systems without external tri-state logic.
Does the 74HC564P-E support 3.3 V operation?
Yes, the 74HC564P-E fully supports 3.3 V operation within its specified 2.0–6.0 V supply range. At VCC = 3.3 V, it maintains guaranteed VIH (≥2.31 V) and VIL (≤1.09 V) thresholds, 13 ns typical propagation delay, and 3-state output leakage ≤ ±0.5 µA - making it suitable for mixed-voltage 3.3 V/5 V system interfaces.
How does the 74HC564P-E differ from the 74HC574?
The 74HC564P-E differs from the 74HC574 solely in output polarity: 74HC564P-E provides inverted outputs (Q̅), while 74HC574 provides non-inverted outputs (Q). All timing parameters, pinout, supply range, and 3-state behavior are identical. No PCB layout change is needed when substituting one for the other - only downstream logic interpretation changes.
What is the maximum clock frequency for the 74HC564P-E at 85°C?
At Ta = –40°C to +85°C, the 74HC564P-E supports a maximum clock frequency of 28 MHz when VCC = 6.0 V. This is derived from the worst-case propagation delay (tPLH/tPHL ≤ 39 ns) and minimum pulse width (tw ≥ 17 ns) specifications under industrial temperature conditions per the Renesas datasheet Rev.2.00.
Is the 74HC564P-E RoHS compliant?
Yes, the 74HC564P-E is RoHS compliant. Renesas Electronics confirms compliance with Directive 2011/65/EU (RoHS 2) for this device, including lead-free terminations (Ni/Pd/Au plating) and absence of restricted substances above threshold limits. Full compliance documentation is available via Renesas' official product page and material declarations.
74HC564P-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74HC
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 137 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HC564P-E FAQ
1.How can I place an order for 74HC564P-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC564P-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74HC564P-E reliable?
The price and inventory of 74HC564P-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC564P-E is usually 5 days.
3.What payment methods are accepted for 74HC564P-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC564P-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC564P-E?
74HC564P-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC564P-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74HC564P-E?
For technical support, including 74HC564P-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC564P-E requirements.
6.How does Aetrix verify that 74HC564P-E is sourced from the original manufacturer or authorized distributors?
All 74HC564P-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74HC564P-E meets industry standards.
7.What is the process for return or replacement of 74HC564P-E?
All 74HC564P-E units undergo pre-shipment inspection (PSI). If there is an issue with 74HC564P-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74HC564P-E part is unused and in its original packaging.
Return procedure for 74HC564P-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC564P-E Tags
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SN74HC574DWR
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SN74HCT574DWR
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SN74LVC1G74DCTR
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